There are many ways to study words, pointing out another meaning of a word, redefining a word in a surprising way.
Interestingly, many of the great liberation movements of history have also been based on examining assumptions. Great movements of political history were founded on a wider definition of person, voter, citizen. Jesus urged people to look at their terms like rabbi, father, measure, leader, doctrines, good, evil.
whosoever shall break one of these least commandments shall be called the least in heaven
be ye not called rabbi, for one is your master and ye are all brethren
call no man Father on earth for one is your father which is in heaven
with what measure ye mete, it shall be measured to you again
they be blind leaders of the blind
they teach for doctrines the commandments of men
why called thou me good? There is none good but one, that is God
Sufficient unto the day is the evil thereof
Speech Style of Jesus 